In the OP shop I found the cutest teapot, with a rounded bottom and with a lid fitting into the top, not on it. There is also a, very small, mark on the bottom. I have no idea what it is, because I don't know pottery. Does anybody have an idea?

Chris had confirmed this is his work: "Yes that is a very early one of mine. I'm not sure exactly when I made it but it was fired in my old fast-fire wood kiln."Makes me wonder where it was all those years, since it was in mint condition when I found it. And did I mention it works beautifully to make tea in?